Quote Originally Posted by Firebottle View Post
Very wise, yes I would replace all with PP.
Hi Alan, thanks...can you shed any light on the two 470nF caps at the input side ie why the are in opposing polarities? I understand why the 10uF caps are configured as they are but the 470nF ones mystify me - that's not a difficult thing to do! I'm concerned that polarity matters at the input side for some reason I don't understand - so would PP caps be ok in that position?